Pyroelectric detector



FIG. 1 is a top perspective view of a pyroelectric detector in accordance with the present design;

FIG. 2 is a left side view of the pyroelectric detector;

FIG. 3 is a right side view of the pyroelectric detector;

FIG. 4 is a front view of the pyroelectric detector;

FIG. 5 is a back view of the pyroelectric detector;

FIG. 6 is a top view of the pyroelectric detector; and,

FIG. 7 is a bottom view of the pyroelectric detector.

The broken lines depict portions of the pyroelectric detector that form no part of the claimed design. 

CLAIM I claim the ornamental design for a pyroelectric detector, as shown and described. 